Аннотация
We study the Q-factors of whispering gallery modes on the surface of standard optical fibers using both spectral and ring-down measurements and show that annealing by the fire torch yields Q-factors higher than 107. In this case, however, variations of the effective radius are introduced, that make the mode spectrum complicated as a number of modes with a nonzero axial component of the wave vector appear. We demonstrate that tapering the fiber sample allows to evade this complexity and to build up an efficient filter operating in transmission.
Язык оригинала | английский |
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Номер статьи | 066201 |
Число страниц | 4 |
Журнал | Laser Physics Letters |
Том | 17 |
Номер выпуска | 6 |
DOI | |
Состояние | Опубликовано - 1 июн 2020 |